Im not a fan of the Arizona style but have a pair in a dark pearled blue, they make my feet look, well kind of odd and find them quite uncomfortable to walk in.
But being a fan of Birkies for as long as I can remember, I prefer the Gizeh style and my most worn colour had been the mid brown (over and over again), but also have them in silver, black patent, white, light blue.
Have 3 pairs of the Madrid, patent hot pink, black and dark gold. I do like the Mayari, but have not tried them.
But what Im finding now is the cork sole is not as tightly packed as it once was made and have 3 pairs that are split at the sides where your foot bends. Also one pair where the edging at the back is coming away, in previous pairs none of this has come away before. I know you can get them re-soled but its too much of a effort.
But having tried other similar brands I still keep coming back to Birkinstocks, and I usually buy them in Germany as you can get different colours and sometimes they are in the sales. But I do think the prices are creeping up to much now, but sure I will keep buying them.
Also TKMaxx do get them in and on line from time to time